Organ donation by minors has long been a highly controversial topic in both legal and ethical discussions worldwide. In the United States, case law has established a case-by-case review mechanism, allowing limited room for the practice of living organ donation by minors under specific conditions. Germany, with a strong emphasis on the protection of personal dignity, adopts a more cautious stance. In China, the law clearly stipulates that living organ donors must possess full civil capacity. However, some scholars argue that under strict conditions and with adequate safeguards, minors should be allowed to donate organs in emergency medical situations. Given the limited domestic experience in this area, China should develop a protective pathway that balances scientific validity, legal compliance, and humanistic concern, in line with its national conditions, legal traditions and cultural background, all under the guidance of the principle of caution. Based on a review of China’s current organ donation system, this article examines legislative philosophies, procedural designs and ethical review mechanisms in the U.S. and Germany. From a comparative law perspective, it extracts institutional elements that could serve as references, with the aim of improving China’s legal framework for organ donation by minors.

OBJECTIVE: To investigate the genetic mechanism for adverse pregnancies due to submicroscopic chromosomal structural variants in two cases, and to provide a precise guidance for preimplantation genetic testing. METHODS: Two families who had visited Chengdu Women's and Children's Central Hospital for reproduction guidance due to recurrent miscarriages, adverse pregnancy history and abnormal genetic testing of the offspring in June and December 2023 were selected as the study subjects. Chromosomal karyotyping and optical genome mapping (OGM) were carried out on peripheral blood samples from the two couples, and preimplantation genetic testing for structural rearrangement (PGT-SR) were performed on the blastocyst trophoblasts. This study was approved by the Medical Ethics Committee of the Hospital (Ethic No.: 2023-23). RESULTS: No abnormality was found on the G-banded karyotyping analysis for both couples. The OGM results revealed that the female partner of couple 1 had a translocation between 4pter-p16.3 (3.99 Mb) and 11pter-p15.4 (2.66 Mb), whilst no abnormality was found in the male partner. Similarly, the male partner of couple 2 had a translocation between 19q13.43-qter (1.90 Mb) and 22q13.31-qter (3.34 Mb). No abnormality was found in the female partner of couple 2. Neither breakpoints nor the adjacent region had involved an OMIM gene, except the formation of a fusion gene ZIM2-AS1-Z82186.1 (Both genes are non-coding, and the fusion gene was deemed as variant of unknown significance). PGT-SR of 11 blastocysts derived from couple 1 revealed that one embryo was suitable for priority transfer, three embryos were suitable for transfer, one embryo was recommended for genetic counselling, and six embryos were unsuitable for the transfer. For couple 2, six blastocysts were tested, of which only one embryo was deemed suitable for transfer. CONCLUSION When genetic testing of offspring indicates copy number variations such as deletions, duplications or mosaicism, the high-resolution OGM technique can be selected to screen parents for submicroscopic chromosomal structural variations. The result can facilitate accurate assessment for the risk of recurrence in offspring, selection of suitable method for reproduction, and identifying targets for PGT.
Humans ; Female ; Pregnancy ; Adult ; Male ; Karyotyping ; Chromosome Aberrations ; Abortion, Habitual/genetics* ; Preimplantation Diagnosis ; Genetic Testing

Objective Observational studies have shown an association between Parkinson disease （PD） and mental illness， but further studies are needed to explore the causal relationship between them. This study aims to investigate such causal relationship using the method of two-sample Mendelian randomization （MR）. Methods Related data were extracted from GWAS， and summary statistics associated with PD， depression， sleep disorders， and anxiety phenotype-variants were obtained. Single nucleotide polymorphisms （SNPs） for PD were selected as instrumental variables， and MR-PRESSO was used to exclude outliers. Inverse variance weighting was used as the main method to assess causal effect estimates， and MR Egger， weighted median， simple mode， and weighted mode were used to verify the robustness of the findings. A sensitivity analysis was used to validate the reliability of the results， including the Cochran Q test， the MR-Egger intercept test， funnel plots， and the leave-one-out method. Results A total of 21 SNPs associated with PD were identified. The MR analysis showed that PD had a causal relationship with depression （OR=0.974，95%CI 0.934‒1.015， P=0.210）， sleep disorders （OR=1.056， 95%CI 0.970-1.149， P=0.211）， and anxiety （OR=0.998， 95%CI 0.996‒1.001， P=0.118）， with no statistical significance. Different MR analyses and sensitivity analyses showed that PD did not directly contribute to the development of mental illness. Conclusion There is no direct causal relationship between PD and depression/sleep disorders/anxiety. In clinical practice， healthcare professionals should pay attention to the mental health of patients with PD. Randomized controlled studies should be conducted in the future to further validate the results of this study.
Depression ; Anxiety

Under the background of breaking the " five only" evaluation criteria, continuously optimizing the scientific research performance evaluation system of hospitals to mobilize the enthusiasm and creativity of scientific researchers and guide the direction of scientific research development plays an important role in enhancing the overall scientific research capability of hospitals. Through literature analysis and expert consultation, a certain hospital has constructed a personal scientific research performance evaluation index system for medical staff in tertiary public hospitals, oriented towards innovation quality and member contributions, and began to implement it throughout the hospital in 2021. This index system included four categories of scientific research performance: vertical scientific research projects, academic influence, science and technology awards, and transformation of achievements, with a total of 20 indicators. The annual scientific research performance score of an individual would serve as the basis for the distribution of year-end scientific research performance and an important reference for applying for key and major projects within the hospital. After the application of this evaluation index system, the enthusiasm of medical staff for scientific research has been effectively stimulated. The average individual scientific research performance score increased from 0.974 in 2020 to 1.220 in 2023. All scientific research indicators involved in the evaluation system have shown growth, with a significant increase in high-quality results. This evaluation system can provide a reference for the scientific research performance evaluation of public hospitals under the background of breaking the " five only" evaluation criteria.

Objective:To investigate the clinical effectiveness of autologous hamstring tendon reconstruction with preserved synovial sheath combined with remnant suture in the treatment of anterior cruciate ligament (ACL) tears.Methods:A retrospective study was conducted to analyze the clinical data of 38 patients with ACL tear who had been admitted to Department of Sports Medicine, The Fourth Hospital of Wuhan from January 2016 to July 2020. There were 30 males and 8 females, with an age of (25.4±7.2) years. By the typing of MRI Sherman tear locations (MSTL) for anterior cruciate ligament, 7 cases were Type I and 31 cases type II. A total of 18 patients underwent single bundle reconstruction of autologous hamstring tendon combined with remnant suture (group A), and the other 20 patients underwent conventional reconstruction to clean the synovial sheath of ACL (group B). The operation time,Tenger scores, Lysholm scores, International Knee Documentation Committee (IKDC) subjective score and side-to-side differences in relaxation at pre- operation, 1 year and 2 years after operation, as well as ACL healing of the affected knee at 2 years after operation, were observed and compared between the 2 groups. The graft synovial coverage was evaluated by secondary arthroscopy in some cases.Results:There was no significant difference in the preoperative general data between the 2 groups, indicating comparability ( P>0.05). All patients were followed up for (38.5±8.4) months. No surgical site infection or knee stiffness occurred in the 2 groups after operation, and 2 patients in each group developed intermuscular venous thrombosis at a lower limb. There was no significant difference in operation time between the 2 groups ( P>0.05). There were significant differences in Tenger score [(6.3±1.6) points versus (4.7±1.7) points], Lysholm score [(93.4±4.2) points versus (85.9±4.3) points] and IKDC subjective score [(89.1±2.9) points versus (81.2±2.9) points] between group A and group B at 1 year after operation ( P<0.05), but there was no significant difference in Tenger score, Lysholm score or IKDC subjective score between the 2 groups at 2 years after operation ( P>0.05). There was no significant difference in side-to-side difference in relaxation between the 2 groups at 1 year or 2 years after operation ( P>0.05). MRI evaluation at 2 years after operation showed no recurrent rupture or no sign of impingement between the graft and the intercondylar fossa in either group. Conventional secondary arthroscopy for 2 patients in group A and 3 patients in group B revealed better synovial coverage in group A. Conclusion:In the treatment of ACL tears of MSTL types I and II, compared with conventional reconstruction to clean the synovial sheath of ACL, autologous hamstring tendon reconstruction with preserved synovial sheath combined with remnant suture can lead to better functional recovery at 1 year after operation, though there is no significant difference in function at 2 years after operation.

With the rapid development of competitive sports, the incidence of anterior cruciate ligament (ACL) injury is on the rise. Such injuries may shorten athletes′ career and lead to other long-term adverse consequences. Although athletes generally recover well after ACL reconstruction, many still struggle to return to their pre-injury performance levels. Advances in the understanding of ACL anatomy and injury mechanisms, along with the evolution of surgical techniques and rehabilitation methods, have provided more individualized and tailored options for athletes following ACL injuries. However, there is currently no consensus in China regarding surgical and rehabilitation strategies for competitive athletes aiming to return to sports after ACL injuries. To this end, the Sports Medicine Committee of the Chinese Research Hospital Association and the Editorial Board of the Chinese Journal of Trauma jointly formulated the Expert consensus on surgical treatment and rehabilitation for competitive sports athletes returning to sports after anterior cruciate ligament injury ( version 2025), and presented 14 recommendations covering surgical indications, preoperative rehabilitation, surgical timing, surgical strategies and postoperative rehabilitation strategies, aiming to improve the surgical treatment and rehabilitation system for ACL injuries in competitive athletes and facilitate their return to high-level sports performance after injury.

This study sought to evaluate the efficacy and safety of venetoclax (Ven) in combination with tyrosine kinase inhibitors (TKI) and reduced-dose chemotherapy for the treatment of patients with minimal residual disease (MRD) -positive and relapsed/refractory (R/R) Ph-positive acute lymphoblastic leukemia (Ph + ALL). A retrospective analysis was conducted on the clinical data of 13 patients with MRD-positive and relapsed Ph + ALL admitted between July 2015 and February 2024 at the Affiliated Cancer Hospital of Zhengzhou University. The cohort included seven males and six females, with a median age of 50 years (range: 37-71 years). Reinduction therapy consisted of Ven and TKI administration combined with reduced-dose chemotherapy. Among the 13 patients, 10 were MRD-positive, and three had R/R disease. Of the MRD-positive group, nine (90%) achieved complete molecular response (CMR), with a median time to response of 47 days (range: 30-80) ; one patient did not respond. Among the three patients who had R/R, two (66.6%) achieved complete remission, while one patient was nonresponsive. The median overall survival (OS) and relapse-free survival (RFS) time for the entire cohort were 21.5 months and 7 months, respectively. In patients who achieved CMR, the median OS and RFS time were 35 months and 34 months, respectively. Grade ≥3 hematologic adverse events occurred in five patients (38.4%) ; however, hematopoietic function recovered in all cases, and no grade ≥3 infections or organ-related adverse reactions were observed. These findings suggest that Ven combined with TKI and reduced-dose chemotherapy may be an effective and tolerable therapeutic strategy for MRD-positive and R/R Ph + ALL, particularly in significantly improving MRD clearance rates.

Breast cancer is recognized as the most common cancer in women globally, posing a serious threat to women′s health. The treatment of breast cancer proves diverse and complex, with radiotherapy serving as a crucial treatment modality. Notably, preoperative radiotherapy holds considerable potential for improving the prognosis of patients. With the advancement in radiotherapy technology, there is a need to re-examine the clinical significance of preoperative radiotherapy for breast cancer and to further explore its applications in clinical treatment. This review provides the current status of research on preoperative radiotherapy for breast cancer, aiming to provide a reference for the radiotherapy of breast cancer.

OBJECTIVE: To investigate the effects of sodium valproate (VPA) in inhibiting Erastin-induced ferroptosis in bone marrow mesenchymal stem cells (BMSCs) and its underlying mechanisms. METHODS: BMSCs were isolated from bone marrow of 8-week-old Spragur Dawley rats and identified [cell surface antigens CD90, CD44, and CD45 were analyzed by flow cytometry, and osteogenic and adipogenic differentiation abilities were assessed by alizarin red S (ARS) and oil red O staining, respectively]. Cells of passage 3 were used for the Erastin-induced ferroptosis model, with different concentrations of VPA for intervention. The optimal drug concentration was determined using the cell counting kit 8 assay. The experiment was divided into 4 groups: group A, cells were cultured in osteogenic induction medium for 24 hours; group B, cells were cultured in osteogenic induction medium containing optimal concentration Erastin for 24 hours; group C, cells were cultured in osteogenic induction medium containing optimal concentration Erastin and VPA for 24 hours; group D, cells were cultured in osteogenic induction medium containing optimal concentration Erastin and VPA, and 8 μmol/L EX527 for 24 hours. The mitochondrial state of the cells was evaluated, including the levels of malondialdehyde (MDA), glutathione (GSH), and reactive oxygen species (ROS). Osteogenic capacity was assessed by alkaline phosphatase (ALP) activity and ARS staining. Western blot analysis was performed to detect the expressions of osteogenic-related proteins [Runt-related transcription factor 2 (RUNX2) and osteopontin (OPN)], ferroptosis-related proteins [glutathione peroxidase 4 (GPX4), ferritin heavy chain 1 (FTH1), and solute carrier family 7 member 11 (SLC7A11)], and pathway-related proteins [adenosine monophosphate-activated protein kinase (AMPK) and Sirtuin 1 (SIRT1)]. RESULTS: The cultured cells were identified as BMSCs. VPA inhibited Erastin-induced ferroptosis and the decline of osteogenic ability in BMSCs, acting through the activation of the AMPK/SIRT1 pathway. VPA significantly reduced the levels of ROS and MDA in Erastin-treated BMSCs and significantly increased GSH levels. Additionally, the expression levels of ferroptosis-related proteins (GPX4, FTH1, and SLC7A11) significantly decreased. VPA also upregulated the expressions of osteogenic-related proteins (RUNX2 and OPN), enhanced mineralization and osteogenic differentiation, and increased the expressions of pathway-related proteins (AMPK and SIRT1). These effects could be reversed by the SIRT1 inhibitor EX527. CONCLUSION VPA inhibits ferroptosis in BMSCs through the AMPK/SIRT1 axis and promotes osteogenesis.
Mesenchymal Stem Cells/metabolism* ; Ferroptosis/drug effects* ; Animals ; Valproic Acid/pharmacology* ; Rats ; Rats, Sprague-Dawley ; Sirtuin 1/metabolism* ; Cell Differentiation/drug effects* ; Cells, Cultured ; AMP-Activated Protein Kinases/metabolism* ; Osteogenesis/drug effects* ; Piperazines/pharmacology* ; Bone Marrow Cells/cytology* ; Reactive Oxygen Species/metabolism* ; Signal Transduction/drug effects*